Dryocetina. | RHYNOHOPHORA. 427 
I. Prothorax plus ou moins gibbeux, nettement verruqueux en 
avant, ponctué en arriere. 
j. Hanches antérieures isolées de la tete, en avant, par une 
bande prosternale assez large. Sommet des élytres excavé 
et dentelé en dessus, fermé horizontalement derriére l’abdo- 
TUGHNCMIGESSOUStee) Me ne om cael ei al Cente? coe 
ii. Hanches antérieures atteignant a peu prés le bord antérieur 
dusternum. Sommet des élytres simplement rétus en dessus, 
Ips = ToMICcUS. 
appliqué contre l’abdomen en dessous. . . . . . . . ‘TAPHRORYCHUS. 
II. Prothorax non gibbeux, couvert de grains écrasés ou chagriné. 
Elytres obtuses 4 la déclivité postérieure. . . . . . . DRyocmrns. 
For the following extract from Léwendal’s work and for its translation 
I am indebted to the kindness of Mr. W. F. H. Blandford :— 
I. Funiculus of antennz 5-jointed ; club jointed on both sides, 
longer than funiculus . . . . . . «+... . . , . TAPHRORYCHUS., 
Il. Funiculus of antenne 5-jointed ; basal joint of club chitinised 
on nearly its whole posterior surface, covering closely the 
remaining softer joints. 
This section contains Xylocleptes, Tomicus and Dryocetes, the latter being cha- 
racterized as follows :—Club of antenne chitinised on anterior side at base, softer 
towards apex, with indistinct cross-sutures. Body cylindrical, Thorax nearly uni- 
formly granulated or rugose. Elytra behind without depression or spines. 
III. Funieulus of antennse 4-5-jointed; the last (5th) joint 
more or less rudimentary, generally closely united with the 
club, which is unjointed on both sides. Body long, cylin- 
drical, Thorax anteriorly granulated, posteriorly punctured. 
Elytra behind without depression or spines. . . . . . LyManmor. 
In the detailed description it is further stated that the thorax has no 
elevated border at base; the prosternum has a prolongation between the 
anterior coxa; the tibia are broad towards apex, obliquely truncate, 
toothed on outer side, ending on the inner side in a thorn-like prolonga- 
tion; and the anterior tarsi fold up into a groove in the tibie ; it will 
be seen that with the exception of the rudimentary fifth joint of the 
funiculus and the absence of sutures in the club (a character often in- 
distinct in Dryocetes) and the fact that the thorax is apparently more 
granulated anteriorily, which is certainly not an important point, the 
genus agrees entirely with Dryocetes and can hardly be reasonably 
separated from it on the characters given by Lowendal. 
HYPOTHENEMUS, Westwood (Stephanodceres, Wichhoff). 
This genus was formed by Professor Westwood for the reception of a 
very small insect which he found in some numbers in the binding of an 
old book ; the locality is therefore uncertain and the species is perhaps 
identical with the Bostrichus ruficollis of Fabricius (Syst. El. i. p. 388) 
which is described as from South America; it has also been identified 
with Stephanoderes areccw, Horn. by Kichhoff, and with St. (Cryphalus) 
aspericollis, Woll.* by Sharp; the genus may be known, apart from the 
* The former of these species has occurred in Columbia and New Guinea ; Ido not 
know the locality of the latter insect. 
